EFFECT OF SPECIMEN GEOMETRY ON FATIGUE OF WELDED-JOINTS

Reports indicate that the joint geometry and loading configuration aff ect the crack growth behaviour of specimens. In an attempt to study th e above effect, three specimen geometries are selected; cruciform join t under tension (CJT), side end notch under tension (SENT) and under t hree-point bending (SENB3) load. Results show that all three geometrie s have different fatigue strength and fracture mechanics parameters, a lthough their weld-metal chemistry and mechanical properties are the s ame. Further tests are needed to establish this relationship quantitat ively.